(3x-7)2-5(2x+1)(x-2)=-x^2-[-(3x+1)]

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Solution for (3x-7)2-5(2x+1)(x-2)=-x^2-[-(3x+1)] equation:


Simplifying
(3x + -7) * 2 + -5(2x + 1)(x + -2) = -1x2 + -1[-1(3x + 1)]

Reorder the terms:
(-7 + 3x) * 2 + -5(2x + 1)(x + -2) = -1x2 + -1[-1(3x + 1)]

Reorder the terms for easier multiplication:
2(-7 + 3x) + -5(2x + 1)(x + -2) = -1x2 + -1[-1(3x + 1)]
(-7 * 2 + 3x * 2) + -5(2x + 1)(x + -2) = -1x2 + -1[-1(3x + 1)]
(-14 + 6x) + -5(2x + 1)(x + -2) = -1x2 + -1[-1(3x + 1)]

Reorder the terms:
-14 + 6x + -5(1 + 2x)(x + -2) = -1x2 + -1[-1(3x + 1)]

Reorder the terms:
-14 + 6x + -5(1 + 2x)(-2 + x) = -1x2 + -1[-1(3x + 1)]

Multiply (1 + 2x) * (-2 + x)
-14 + 6x + -5(1(-2 + x) + 2x * (-2 + x)) = -1x2 + -1[-1(3x + 1)]
-14 + 6x + -5((-2 * 1 + x * 1) + 2x * (-2 + x)) = -1x2 + -1[-1(3x + 1)]
-14 + 6x + -5((-2 + 1x) + 2x * (-2 + x)) = -1x2 + -1[-1(3x + 1)]
-14 + 6x + -5(-2 + 1x + (-2 * 2x + x * 2x)) = -1x2 + -1[-1(3x + 1)]
-14 + 6x + -5(-2 + 1x + (-4x + 2x2)) = -1x2 + -1[-1(3x + 1)]

Combine like terms: 1x + -4x = -3x
-14 + 6x + -5(-2 + -3x + 2x2) = -1x2 + -1[-1(3x + 1)]
-14 + 6x + (-2 * -5 + -3x * -5 + 2x2 * -5) = -1x2 + -1[-1(3x + 1)]
-14 + 6x + (10 + 15x + -10x2) = -1x2 + -1[-1(3x + 1)]

Reorder the terms:
-14 + 10 + 6x + 15x + -10x2 = -1x2 + -1[-1(3x + 1)]

Combine like terms: -14 + 10 = -4
-4 + 6x + 15x + -10x2 = -1x2 + -1[-1(3x + 1)]

Combine like terms: 6x + 15x = 21x
-4 + 21x + -10x2 = -1x2 + -1[-1(3x + 1)]

Reorder the terms:
-4 + 21x + -10x2 = -1x2 + -1[-1(1 + 3x)]
-4 + 21x + -10x2 = -1x2 + -1[(1 * -1 + 3x * -1)]
-4 + 21x + -10x2 = -1x2 + -1[(-1 + -3x)]
-4 + 21x + -10x2 = -1x2 + [-1 * -1 + -3x * -1]
-4 + 21x + -10x2 = -1x2 + [1 + 3x]

Reorder the terms:
-4 + 21x + -10x2 = 1 + 3x + -1x2

Solving
-4 + 21x + -10x2 = 1 + 3x + -1x2

Solving for variable 'x'.

Reorder the terms:
-4 + -1 + 21x + -3x + -10x2 + x2 = 1 + 3x + -1x2 + -1 + -3x + x2

Combine like terms: -4 + -1 = -5
-5 + 21x + -3x + -10x2 + x2 = 1 + 3x + -1x2 + -1 + -3x + x2

Combine like terms: 21x + -3x = 18x
-5 + 18x + -10x2 + x2 = 1 + 3x + -1x2 + -1 + -3x + x2

Combine like terms: -10x2 + x2 = -9x2
-5 + 18x + -9x2 = 1 + 3x + -1x2 + -1 + -3x + x2

Reorder the terms:
-5 + 18x + -9x2 = 1 + -1 + 3x + -3x + -1x2 + x2

Combine like terms: 1 + -1 = 0
-5 + 18x + -9x2 = 0 + 3x + -3x + -1x2 + x2
-5 + 18x + -9x2 = 3x + -3x + -1x2 + x2

Combine like terms: 3x + -3x = 0
-5 + 18x + -9x2 = 0 + -1x2 + x2
-5 + 18x + -9x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-5 + 18x + -9x2 = 0

Factor a trinomial.
(-5 + 3x)(1 + -3x) = 0

Subproblem 1

Set the factor '(-5 + 3x)' equal to zero and attempt to solve: Simplifying -5 + 3x = 0 Solving -5 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + 3x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 3x = 0 + 5 3x = 0 + 5 Combine like terms: 0 + 5 = 5 3x = 5 Divide each side by '3'. x = 1.666666667 Simplifying x = 1.666666667

Subproblem 2

Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333

Solution

x = {1.666666667, 0.3333333333}

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